Nathaniel b



IJNiTEp STATES PATENT OFFICE.

NATHANIEL B. RICE, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHRISTIAN IYAHL, OFSAME PLACE.

APPARATUS FOR C ONDENSING OR DRYING LlQUlDS.

SPECIFICATION forming part of Letters Patent No. 292,949, dated February5, 1884.

Application filed July 26, 1883. (N0 model.)

To all whom it mag concern.-

Be it known that I, NATHANIEL l3. Bron, residing at Chicago, in thecounty of Cook and State of Illinois, and a citizen of the UnitedStates, have invented certain new and useful Improvements in Apparatusfor Condensing or Drying Liquids, of which the following is a fulldescription, reference being had to the accompanying drawings, in whichFigure 1 is an elevation partly in section;

Fig. 2, a cross-section of the casing, and showing the upper and lowerends of the channel.

The object of this invention-is to so construct the channel of anapparatus wherein liquids or liquid solutions are dried, concentrated,orreduced by passing down a contin-, uous channel, that such channel canbe re moved from the casing for the purpose of cleaning, repairing, orrenewal; and its nature consists in an improved construction andarrangement of the condensing-channel with the heating devices andcasing, and in theiinprovements hereinafter described, and claimed asnew.

In the drawings, A indicates the exterior cylinder or casing; A, thecover; I3, the in terior cylinder or casing; C, steam-space between thecasings A B; D, the continuous channel; E, inlet or feed pipe; F,dischargepipe; G, exhaust; a, steam-pipes; a, steamcoil; a and a,couplings; b, cross-section of channel; 0, supporting bars or rods. 7

The cylinders A B are cast or made of sheet or plate metal, as may bedesired, and they are suitably attached to the bottom plates and anannular top plate to form a steam or heating space, C, between them. Thedevice is i provided with a cover, A, which is attached in such a mannerthat it may be detached or removed.

\Vithin the casing B, I have placed or formed a circular continuouschannel,-D, which extends from the bottom nearly orquite to the top.This channel is by preference formed of heavy sheet-copper, having theform in crosssection shown at b, Fig. 1, and in this form the risers orsides of the channel will give it sufficient rigidity to maintain itsposition within the casing. If, however, it should requirestrengthening, plates orbars 0 may be attached to the inside or outside,or both, so as to give the convolutions strong support from the bottom.The inner or central space is filled or partly filled with steam-pipesa, which pipes are connected with the steamspace C, and extend nearly orquite to the upper end of the device. The scroll or continuouschannel-way D is not attached to the casing nor to the exhaust-pipe G,so that by the use of a crane or other suitable apparatus, when thecover A is removed, this channel or passage-way can be lifted out foreither of the purposes named, when the pipe E is drawn back, and thecouplings a and a dis connected.

In operation, the liquid to be treated passes in at the top or passageE, the inner end of which is so arranged that it can be drawn back outof the way, when the channel D is to be lifted. The treated materialpasses out at the pipe F, which pipe is provided with a trap, or has asufficient length to counterbalance the suction, when a suction -fan or.other exhaust apparatus is applied to the pipe G. The feed-pipe E isalso suitably applied to permit of the proper operation of the exhaustto concentrate the passing liquids under A a vacuum. a I have shown thisdevice cylindrical in form, as I deem this to be the best method ormanner of constructing it; but it is obvious that it may be angular inform, and two of its sides may have a greater extension or surface thanthe other sides, and for some purposes a single exterior casing may beused in connection with the continuously-descending channel, andtherefore I do not limit the use of my removable channel to itscombination with a structure having a double case.

\Vhat I claim as new, and desireto secure by Letters Patent, is asfollows:

1. In a liquid condensing or drying apparatus, the removablecontinuously-descending channel D, substantially as and forthe purposespecified.

2. The combination of the removable channel D with the steam-pipes a,substantially as described.

35 The combination of the removable channel D with the casing A B, coverA, and steam- 3 removable channel I), substantially as specipipesa,,c0nstructed and operating snbstan- 6. The combination of theremovable chan- 1o tially as described. nel and pipe D. a with the outerease and the 4. The combination of the exhaust-pipe Gr vertical pipes a,substantially as specified. withthe steam-pipes a, casings A B, and theNATHANIEL B. RICE. fied. I

5. The combination of the removable chan- \Vitnesses: nel D and theremovable coil 0, with the! O. \V, BOND,

outer case, A B, substantially as described.

A. H. ADAMS.

